EP3577695A1 - Photovoltaic device - Google Patents
Photovoltaic deviceInfo
- Publication number
- EP3577695A1 EP3577695A1 EP18713574.4A EP18713574A EP3577695A1 EP 3577695 A1 EP3577695 A1 EP 3577695A1 EP 18713574 A EP18713574 A EP 18713574A EP 3577695 A1 EP3577695 A1 EP 3577695A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cell
- power electronics
- electronics unit
- cells
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
- H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/041—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L31/00
- H01L25/043—Stacked arrangements of devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/043—Mechanically stacked PV cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/50—Photovoltaic [PV] devices
- H10K30/57—Photovoltaic [PV] devices comprising multiple junctions, e.g. tandem PV cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/50—Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- Photovoltaic device The invention relates to a photovoltaic device with two or more separate solar cells.
- PV photovoltaics
- PV system costs are largely determined by system costs, for example, for the total panel, the Verkabe ⁇ ment, the power electronics and other construction costs. Even if for some years so-called
- tandem PV cell groups in which two or even more light-sensitive PV cells or layers are arranged one above the other.
- the different cells ideally differ in their spectral sensitivity, ie Different cells have their respective Maximaleffizi ⁇ ence for different spectral ranges of sunlight. This causes the tandem cell group as a whole to provide high efficiency for a wider spectral range.
- tandem cell group may, for example, have a classical silicon-based PV cell on which a further, for example, perovskite-based PV cell is applied.
- Perovskite materials have a larger band gap than silicon-based materials, which is why the
- Perovskite-based PV cell has a higher Absorbtionsanteil in the blue or short-wave spectral range
- the silicon-based PV cell absorbs more strongly in the longer wavelength spectral region, so that the by laser- ⁇ sene of the Perowskitzelle or layer light or at least a portion thereof from the
- Silicon cell is absorbed.
- the 1 shows a side view of such a known tandem PV cell group 1.
- the upper, ie the non dargestell ⁇ th light source or the sun facing the cell 11 of the Tan ⁇ the cell group 1 is a photovoltaic cell from a first material having maximum efficiency in a first spectral range Sl.
- the bottom cell 21 is a photovoltaic cell of a second Mate rial with maximum efficiency in a second spectral range S2, wherein the spectral regions Sl, S2 as well as the material ⁇ lien are different.
- tandem cell groups operate according to the concept that the electrical current I generated when the light incidence L flows sequentially through both cells 11, 21, ie, the cells 11, 21 are electrically connected in series.
- this problem can be solved by an approach known as "current matching" in that the individual cells 11, 21 are designed in such a way that they deliver the same magnitude of electrical currents.
- FIG. 2 shows a view in the y direction of the planes indicated by the dashed lines in FIG
- FIG 2 Representation in FIG 2 is chosen as if the cell 1 of FIG 1 were folded apart so that the two layers 11, 21 are now adjacent. It is made clear that the surfaces of the areas 12 of the first cell 11 are larger than the areas of the areas 22 of the second cell 21. For the sake of clarity, only a few of the respective areas 12, 22 are provided with reference symbols.
- the areas 12, 22 of the respective cell 11, 21 are connected in series to a respective area group 13, 23. Furthermore, the two area groups 13, 23 are electrically connected in series, ie in series. The concept of adapting the areas of light-sensitive
- a PV device has a multi-PV cell group with at least one first PV cell of a first cell type and a second PV cell of a second cell type on, wherein the first and the second cell type differ from each other, and wherein each of the PV cells provides an electrical cell voltage Ul, U2 upon incidence of light on the respective PV cell.
- a power electronics is provided with a separate first power electronics unit, which is associated with the first PV cell, and a sepa ⁇ rate second power electronics unit, which is associated with the second PV cell.
- the gene ⁇ tured in the respective PV cell electric cell voltage Ul, U2, and a corresponding current yield II, 12 are the respective PV cell associated separate power electronics unit supplied, for example. Via corresponding electrical connections.
- the PV device has a control device for regulating the power electronics.
- the first and the second power electronics unit can now be operated independently of one another with the aid of the control device such that each PV subsystem, which in each case has one of the PV cells and the power electronics unit assigned to the respective PV cell, operates at its optimum operating point.
- the PV device has at least a first and a second PV subsystem, wherein the first PV subsystem has the first PV cell and the first power electronics unit and the second PV subsystem has the second PV cell and the second power electronics unit having .
- the tandem PV cell group includes two galvanically isolated PV cells, which are not directly electrically connected in series or in any other way, but rather, the electrical voltages generated by the PV cells of the cell group when illuminated, as well as the corresponding currents, are each a separate power electronics unit By using individual power electronic units for the different PV cells, it becomes ensures that every PV cell can be be driven ⁇ at the optimum operating point.
- the controller is configured to control in the operation of the power electronics unit of each PV subsystem depending ⁇ stays awhile power electronics unit such that a product of the current yield II, 12 and the cell voltage Ul, U2 of the associated one of the respective power electronics unit PV cell is maximum.
- the expression that the product should be "maximum” does not necessarily mean or mean at any point in time the exact point at which said product reaches the absolute maximum is also technically ⁇ not far technically feasible than that the control device supplied values in practice continuously vary within a certain range, so that a theoretically at a time Tl maximum value at the next time T2 again no longer the theoretical maximum value
- the term means that the respective product should be "maximum”, that is regulated in the context of the regulation in each case to the effect that the counselelektro ⁇ nikajien each always be adjusted so that the respective current-voltage product to the current, the ⁇ oretically possible maximum changed. In fact, it is regulated in such a way that the current-voltage product
- the control device can this work so that the rules of the power electronics unit a one ⁇ contact resistance of each power electronics unit is so adaptable that the product of the current yield II, 12, and the cell voltage Ul, U2 assigned to the respective power electronics unit PV cell is maximum.
- the control device is designed to regulate the power electronics units independently of one another.
- the control device can, for example, have a number of regulators corresponding to the number of PV subsystems. These regulators may, for example, be designed as so-called PID controllers.
- the PV device has a sensor device with a device for determining temperatures of the PV cells and / or for determining an ambient temperature of the multi-PV cell group, wherein one or more of the temperatures and / or the ambient temperature descriptive parameters of Control device can be supplied as input.
- the sensor may be a device having a device for determining the PV device, in particular to the first PV cell, falling light intensity, wherein a light intensity describe the ⁇ is supplied to the parameter of the control device as an input variable.
- the sensor device may comprise a device for determining a
- the control device is now designed to regulate the power electronics units based on the input variable (s) supplied to it.
- control device is designed, in particular, to execute the regulation, in particular based on lookup tables or model-based, in such a way that, depending on the input variable (s) for each power electronics unit, that input resistance is determined and set such that the product of the current output I and of the Cell ⁇ voltage U of the respective power electronics unit associated PV cell is maximum.
- a cell type is selected ⁇ whose PCE maximum is in a spectral range for the first PV cell is substantially transparent for the second photovoltaic cell.
- substantially transparent is intended to mean that the first PV cell absorbs this particular spectral range significantly less than in other spectral ranges.Of course, it must be assumed that the first PV cell basically has a certain amount in every spectral range relevant for this application Absorbance has, however, can also be assumed that the Absorpti- onsgrad in certain areas of the light spectrum ver ⁇ comparatively low and thus “substantially transparent”.
- the first PV cell may be a perovskite-based PV cell and / or the second PV cell may be a silicon-based PV cell.
- control device is designed to regulate the power electronics unit associated with the first perovskite-based PV cell such that a hysteresis of output variables of the first PV cell is compensated. This compensation is achieved by appropriate adaptation of the operating parameters of the controller, for example. PID parameters.
- the control device is further configured to perform the regulation of the power electronics units such that aging of a respective PV cell and / or contamination of the multi-PV cell group or the individual PV cells are compensated. In this case, the optimization of the product from the current yield I and the cell voltage U of the PV cell assigned to the respective power electronics unit is again aimed at, whereby the input resistors are also used here the power electronics units are set independently.
- control device of the initially mentioned kinds the first and the second power electronics unit by means of the control means are operated independently of each other such that each PV Subsystem, each having one of the PV cells and their associated power electronics unit operates at its optimum operating point.
- the respective power electronics unit When operating the power electronics unit of each PV subsystem, the respective power electronics unit is controlled such that a product of the power output II, 12 and the cell voltage Ul, U2 of the PV cell assigned to the respective power electronics unit is the maximum.
- the control device regulates the procedure for controlling the respective power electronics unit to adjust the product of the Stromer ⁇ contract II, 12 and the cell voltage Ul, U2 of the respective power electronics unit associated PV cell is maximum.
- the control device regulates the procedure for controlling the respective power electronics unit to adjust the product of the Stromer ⁇ contract II, 12 and the cell voltage Ul, U2 of the respective power electronics unit associated PV cell is maximum.
- the control device regulates the procedure for controlling the respective power electronics unit to regulates the procedure.
- the power electronics units are regulated based on the input variable (s) supplied to the control device.
- the regulation in particular based on lookup tables or model-based, is carried out in such a way that, depending on the input variable (s) for each power electronics unit, that input resistance is determined and set with which the product of the current output I and the cell voltage U of the respective power nikatti assigned PV cell is maximum.
- an aging curve of a cell location can also be stored in the lookup table. For each power electronics so the voltage and current levels are adjusted so that a maximum Energyer ⁇ contribution of the respective PV cell is achieved, ie each PV cell operates with its associated power electronics at its optimum operating point.
- the adaptation can take place, for example, by regulating the input resistance of the respective power electronics, with the regulation of the input resistance having an effect on the current yield I at cell voltage U dependent on the lighting of the PV cell connected to this power electronics.
- the product of the voltage generated by the PV cell under illumination voltage U with the corresponding current I describes the energy yield of the PV cell.
- each PV cell in the cell group can be operated at its optimum operating point, ie by using separate power electronics for both PV cells. en, they can both be operated continuously at the respective optimal operating point.
- PV cells are generally subject to an aging process.
- this inevitably entails a detuning of the tuning of the individual cells. This effect no longer plays any role in the inventive approach.
- perovskite-based PV cells in contrast to conventional PV cells, often exhibit a so-called enema effect in that the maximum efficiency of the cell, which is often referred to as "power conversion efficiency" (PCE), remains constant
- PCE power conversion efficiency
- the PCE of a silicon-based PV cell is reached virtually immediately after startup, again due to the separate power electronic units and the individual controls of the different PV subsystems both subsystems can be operated at the optimum operating point.
- the energy yield of perowskitbas striv convinced cell is indeed reduced during the impact of the inflow effect compared to the income of the other cell, but because of the possibility of indi ⁇ vidual control optimally nevertheless for the existing conditions. Since s concept is not only applicable to the combination of perovskite-based with silicon-based cells, but in principle to any combination with other PV cell types such as the thin-film solar cells or with
- 1 shows a tandem PV cell group according to the prior art
- 2 shows cross sections of the tandem PV cell group according to the prior art
- FIG. 5 shows a PV device according to the invention in a first
- FIG. 6 shows a PV device according to the invention in a second
- FIG. 3 shows a PV device 100 with a multi-PV cell group 1, which has a first PV cell 11 of a first cell type, ie with one or more first light-sensitive areas 12 made of a first material which, upon illumination, has an electrical voltage U1 provide, as well as a two ⁇ te PV cell 21 of a second cell type, ie len 22 with one or more second (not shown) light-sensitive Area- of a second material which illumination provide an electrical voltage U2 also at Be ⁇ has.
- the two PV cells 11, 21 having multi-PV cell group 1 is therefore a tandem PV cell group.
- the respective PV cell generates ei ⁇ ne voltage (or similar), but which is meant that these voltages are generated from the respective light-sensitive areas of the cells.
- the cell group 1 is arranged in operation such that the first PV cell 11 of a light source, for example. The sun, is ⁇ applied .
- the light L radiated from the light source and incident on the cell group 1 thus initially strikes the first PV cell 11, which leads in a known manner to the fact that the first PV cell 11 or its light-sensitive areas 12 of the first material, the first electrical cell voltage Ul ge ⁇ nerated.
- the two cell types are chosen such that the maximum efficiency of the various cells 11, 21, which is also referred to as "Power Conversion Efficiency" (PCE), lies in different spectral ranges - selects whose PCE maximum is in a spectral range for which the first PV cell 11 is substantially transparent.
- PCE Power Conversion Efficiency
- the first PV cell 11 basically has a certain degree of absorption in each spectral range relevant for this application, but it can also be assumed that the absorption coefficient in certain regions of the light spectrum is comparatively low and the cell 11 so is "in ⁇ We sentlichen transparent" for this spectral range.
- the first PV cell 11 is a
- the perovskite-based PV cell ie the light-sensitive areas 12 of the first PV cell 11 have a perwoskiticians material.
- the second PV cell 21 is a silicon-based PV cell.
- Perovskite materials have a larger band gap than silicon-based materials, which is why the perovskite-based PV cell 11 has a higher absorption in the blue or short-wave spectral range and allows longer-wavelength light to pass through.
- the silicon-based PV cell 21 more strongly absorbed in the longer wavelength areas of the spectrum ⁇ rich, so that the light transmitted by the Perowskitzelle 11 Light or at least a part thereof can be absorbed by the silicon cell 21.
- the PV device 100 has a power electronics 30 with a first power electronics unit 31 and a second power electronics unit 32, wherein the whelekt ⁇ roniköen 31, 32 operate separately and independently.
- the first power electronics unit 31 is associated with the ers ⁇ th PV cell 11 and the second power electronics unit 32 is associated with the second PV cell 21st
- the first photovoltaic cell 11 and the first power electric ⁇ nikatti 31 form a first PV subsystem 10 of the cell group 1.
- a second PV subsystem 20 of the cell group. 1 The cell voltages Ul, U2 generated by the PV cells 11, 21 during illumination are supplied to the respective power electronics unit 31, 32 via corresponding electrical connections 14, 24. Depending on a respective input resistance of the power electronics units 31, 32, corresponding current yields II, 12 result.
- the PV device 1 furthermore has a control device 40 which is designed to regulate the respective power electronics unit 31, 32 during operation of the power electronics unit 31, 32 of each PV subsystem 10, 20 such that a product from the power output II or 12 and the cell voltage Ul or U2 of the respective power electronics unit 31, 32 associated with the PV cell 11, 21 is maximum. This results in that the energy yield of the respective PV subsystem 10, 20 becomes maximum, the essential
- FIG. 4 shows the relationship between current yield I and cell voltage U under constant illumination for a typical PV cell.
- the optimal operating point with maximum energy yield or optimal energy production lies in the diagram at the point marked MAX, at which the product of cell voltage U and current yield I becomes maximum.
- MAX the point marked MAX
- the control device 40 is now designed to accommodate such in controlling the respective power electronics unit 31, 32 an A ⁇ contact resistance of the respective power electronics unit 31, 32 and thus the power output I in of each PV subsystem 10, 20 that the product or from the electricity yield II 12 and the cell voltage U1 or U2 for the respective power electronics unit 31, 32 associated PV cell 11, 21 is maximum, wherein the control device 40, the power electronics units 31, 32 controls in particular independently of each other.
- the control device 40 for example, one of the number of PV subsystems 10, 20 corresponding number of controllers 41, 42, each power electronics unit 31, 32 and each PV subsystem 10, 20, a controller 41, 42 is assigned.
- These regulators 41, 42 may, for example, be designed as so-called PID controllers.
- the control device 40 or the individual controllers 41, 42 operate, for example, such that for each PV subsystem 10, 20 sepa ⁇ rat whose current output II or 12 and the cell voltage Ul or U2 are measured.
- the first controller 41 can vary the input resistance of the first power electronics unit 31 based on the values for II and Ul supplied to it and monitor the current output II and the cell voltage U1 or the product of these measured values.
- the input resistance is then set such that, as already mentioned, the product of current yield II and cell voltage U1 become maximum, together with maximum energy yield of the first PV subsystem 10.
- the controller 42 of the second PV subsystem 42 operates in the same way over the Variation of the input resistance of the second power electronics unit 32, so that the product of power output 12 and
- the control device 40 can additionally or alternatively be fed with data from a sensor device 50, as explained above, based on current or voltage measurements.
- the sensor device 50 has a device 51 for determining temperatures of the PV cells 11, 21 and / or for determining an ambient temperature of the tandem PV cell group 1.
- One or possibly several parameters describing the temperatures and / or the ambient temperature are supplied to the control device 40 and the separate regulators 41, 42 as an input variable.
- the sensor device 50 may comprise a device 52 for determining a luminous intensity falling on the multi-PV cell group 1 and in particular on the first PV cell 11, wherein a parameter describing the luminous intensity is fed to the control device 40 or the regulators 41, 42 as an input variable.
- the sensor device 50 can have a device 53 for determining a spectrum of a light falling on the multi-PV cell group 1 and in particular on the first PV cell 11, wherein a parameter describing the spectrum of the control device 40 or the regulators 41, 42 is supplied as input.
- the crizein ⁇ device 40 is now adapted to on or supplied to input values the power electronics units 31, 32 to regulate based such that the product of the power output I and the cell voltage consumer electronics unit U of the respective performance 31, 32 associated with PV Cell 11, 21 is maximum. This can be done again by appropriate adaptation of the input resistance of the respective power electronics unit 31, 32.
- the target values to which the input ⁇ resistors are set here may, for example, based model are determined or based determined from lookup tables such that in response to the one or more input values for each power electronics unit 31, 32 derje ⁇ nige input resistance of a corresponding lookup table is determined and set that the product of the current yield I and the cell voltage U of the respective power electronics unit 31, 32 associated with the PV cell 11, 21 is maximum.
- the control is based on a setting of the input resistor of a respective power electronics unit 31, 32 to the effect that the said product at most becomes .
- FIG. 5 shows an embodiment of the PV device 100, in which the cabling effort between cell groups 1 and
- Power electronics 40 is reduced.
- the cell h ⁇ len 11, 21 set at a common potential or MITEI ⁇ Nander connected, so that only 3 electric lines for power electronics 40 must be performed.
- the embodiment shown in FIG 6 causes which can be minimized in the insulation of the wiring from occurring ⁇ total voltages of the individual cells 11, 21 and thus the requirements.
- the two cells 11, 21 are arranged such that their voltages Ul, U2 are opposite to each other. This is of course not useful in conventional tandem PV cell groups, but can be used advantageously here. It is useful again, as in the embodiment shown in FIG. 5, to set the terminals of the cells 11, 21 opposite one another to a common potential.
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- Engineering & Computer Science (AREA)
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- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Radar, Positioning & Navigation (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (3)
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DE102017203809 | 2017-03-08 | ||
DE102017205524.3A DE102017205524A1 (en) | 2017-03-08 | 2017-03-31 | photovoltaic facility |
PCT/EP2018/055499 WO2018162496A1 (en) | 2017-03-08 | 2018-03-06 | Photovoltaic device |
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EP3577695A1 true EP3577695A1 (en) | 2019-12-11 |
EP3577695B1 EP3577695B1 (en) | 2021-07-14 |
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EP18713574.4A Active EP3577695B1 (en) | 2017-03-08 | 2018-03-06 | Photovoltaic device |
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US (2) | US20200144238A1 (en) |
EP (1) | EP3577695B1 (en) |
JP (1) | JP2020509734A (en) |
KR (1) | KR102339756B1 (en) |
CN (1) | CN110574171B (en) |
DE (1) | DE102017205524A1 (en) |
ES (1) | ES2893867T3 (en) |
WO (1) | WO2018162496A1 (en) |
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DE102018216485A1 (en) | 2018-09-26 | 2020-03-26 | Siemens Aktiengesellschaft | PV facility with improved overall efficiency |
DE102018216607A1 (en) * | 2018-09-27 | 2020-04-02 | Siemens Aktiengesellschaft | PV device with reduced aging |
DE102018216768A1 (en) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Extended PV system with improved efficiency |
JP7225881B2 (en) * | 2019-02-13 | 2023-02-21 | 三菱ケミカル株式会社 | Photoelectric conversion device |
Family Cites Families (18)
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JPH02133811A (en) * | 1988-11-15 | 1990-05-23 | Toshiba Corp | Photovoltaic power generating device |
DE10219956B4 (en) * | 2001-05-18 | 2004-07-08 | Webasto Vehicle Systems International Gmbh | solar system |
DE10222621A1 (en) * | 2002-05-17 | 2003-11-27 | Josef Steger | Process and circuit to control and regulated a photovoltaic device assembly for solar energy has controlled bypass for each cell to ensure maximum power operation |
JP2004079997A (en) * | 2002-06-19 | 2004-03-11 | Canon Inc | Power generation system and power generating device |
JP2004259762A (en) * | 2003-02-24 | 2004-09-16 | Honda Motor Co Ltd | Power supply system having solar battery |
US20050150542A1 (en) * | 2004-01-13 | 2005-07-14 | Arun Madan | Stable Three-Terminal and Four-Terminal Solar Cells and Solar Cell Panels Using Thin-Film Silicon Technology |
JP4528574B2 (en) * | 2004-07-22 | 2010-08-18 | 長野日本無線株式会社 | Solar power plant |
WO2010000855A2 (en) * | 2008-07-03 | 2010-01-07 | Imec | Multi -junction photovoltaic module and the processing thereof |
US8401706B2 (en) * | 2008-08-28 | 2013-03-19 | ETM Electromatic | Networked multi-inverter maximum power-point tracking |
US8569613B1 (en) * | 2008-09-29 | 2013-10-29 | Stion Corporation | Multi-terminal photovoltaic module including independent cells and related system |
FR2940476B1 (en) * | 2008-12-18 | 2011-02-25 | Total Sa | ELECTRONIC MANAGEMENT SYSTEM FOR PHOTOVOLTAIC CELLS |
CN101534074B (en) * | 2009-04-10 | 2012-06-06 | 保定天威集团有限公司 | Maximum power tracking control method |
FR2953996B1 (en) * | 2009-12-11 | 2012-01-20 | Centre Nat Rech Scient | ELECTRONIC MANAGEMENT SYSTEM OF PHOTOVOLTAIC CELLS FUNCTION OF METEOROLOGY |
DE102010023118A1 (en) * | 2010-06-09 | 2011-12-15 | Gehrlicher Solar Ag | Screen, screen arrangement and screen network with solar cells |
US9035626B2 (en) * | 2010-08-18 | 2015-05-19 | Volterra Semiconductor Corporation | Switching circuits for extracting power from an electric power source and associated methods |
WO2013064828A1 (en) * | 2011-11-01 | 2013-05-10 | Enecsys Limited | Photovoltaic power conditioning units |
WO2016157979A1 (en) * | 2015-03-31 | 2016-10-06 | 株式会社カネカ | Photoelectric conversion device and photoelectric conversion module |
US20170040557A1 (en) * | 2015-08-05 | 2017-02-09 | The Board Of Trustees Of The Leland Stanford Junior University | Tandem Photovoltaic Module Comprising a Control Circuit |
-
2017
- 2017-03-31 DE DE102017205524.3A patent/DE102017205524A1/en not_active Withdrawn
-
2018
- 2018-03-06 WO PCT/EP2018/055499 patent/WO2018162496A1/en unknown
- 2018-03-06 EP EP18713574.4A patent/EP3577695B1/en active Active
- 2018-03-06 ES ES18713574T patent/ES2893867T3/en active Active
- 2018-03-06 US US16/492,108 patent/US20200144238A1/en not_active Abandoned
- 2018-03-06 CN CN201880030583.9A patent/CN110574171B/en active Active
- 2018-03-06 JP JP2019548583A patent/JP2020509734A/en active Pending
- 2018-03-06 KR KR1020197029265A patent/KR102339756B1/en active IP Right Grant
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2022
- 2022-07-19 US US17/813,481 patent/US11973073B2/en active Active
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US20220352136A1 (en) | 2022-11-03 |
WO2018162496A1 (en) | 2018-09-13 |
US11973073B2 (en) | 2024-04-30 |
CN110574171B (en) | 2023-09-01 |
JP2020509734A (en) | 2020-03-26 |
EP3577695B1 (en) | 2021-07-14 |
CN110574171A (en) | 2019-12-13 |
DE102017205524A1 (en) | 2018-09-13 |
KR102339756B1 (en) | 2021-12-14 |
ES2893867T3 (en) | 2022-02-10 |
KR20190120379A (en) | 2019-10-23 |
US20200144238A1 (en) | 2020-05-07 |
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